JPS60159580A - Drier - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a dryer that circulates warm air through a drying chamber to dry clothes and the like.

[Conventional technology]

Figure 1 is a sectional view showing a conventional dryer shown in, for example, JP-A-57-58064. In the figure, (1) is an outer box, and (2) is a rotatable machine inside the outer box (1). It is a rotating drum with a drying chamber inside, and the rear plate (2b) is pivoted at the approximate center to the support plate (4) via a pivot (3), and the front plate (2a) is used for loading and unloading of dried materials. An opening (5) is formed. (6) (7) are hot air inflow and outflow holes opened in the front plate (2a) and rear plate (2b) of the rotating drum (2), respectively;
The support plate (4) covers the group of inflow holes (6) from the rear.
), (9) is a fan casing connected to this ventilation case via the air supply duct Q (H-),
0υ is a circulation fan installed in this fan casing, (2) is a heater installed in the air supply duct)Ql, (
) is an annular exhaust case installed to cover the group of outflow holes (7) on the front surface of the rotating drum (2) from the front, and α→ is a dehumidifier installed below this exhaust case. Inside the flat plastic outer casing (2) with a portion of each side wall opened for ventilation, there are air channels for cold air connected to the openings on both left and right walls. Multiple ventilation pipes αη with protruding cooling fins O1
is vertically inserted into the air passage (G), and the inside of the ventilation pipe αη is used as an air passage (G) for hot air. (to) is a circulation duct whose one end is connected to the lower opening of the outer casing (a) and the other end is connected to the air intake port (9a) of the fan casing (9). α1 is a drainage port formed at the bottom of one end of the circulation duct, (1) is an electric motor that rotates the rotating drum (2) via a belt 01), and the trunk is an opening provided in the front of the outer box (1). The door that opens and closes part (5) is a time switch.

A conventional dryer is constructed as described above, and has two rotating drums (2
) and set the time switch (2), the heater (b) and electric motor (1) will be energized.
As the heater (2) generates heat, the electric motor (2) rotates, and the rotating drum (2), the circulation fan 0υ, and the cooling fan (not shown) are driven to rotate. This is K for circulation fan 0
An air flow is formed by υ, and as it flows through the power supply duct (Qd), it is heated by the heater (B) and becomes hot air, and is blown into the rotating drum (2) through the air expansion case (8), where it is exposed to air. It takes away the moisture from the dry matter and lowers the temperature slightly, turning it into humid warm air, which is then passed through the exhaust case Q to the ventilation pipe Q of the dehumidifier a.
flows into η. Since this dehumidifier is cooled by outside air, the humid hot air is cooled and condensed, moisture is removed, and the dry warm air is returned to the fan casing (9) via the circulation duct (toward). It's like going back inside.

However, as mentioned above, the power consumption is large because the circulating air is heated by the heater (2), and since the dehumidifier o4 is cooled by outside air (generally indoor air), there is a temperature difference. It is difficult to remove the moisture, and therefore the dehumidifying effect is poor and the drying time is long.

[Summary of the invention]

This invention has been made with the aim of improving such drawbacks, and includes providing an evaporator and a condenser of a refrigeration cycle in the hot air circulation passage, and providing the evaporator upstream of the condenser and a part of the evaporator. This paper proposes a dryer that has high dehumidification efficiency of circulating humid hot air and high heat utilization efficiency by disposing the dryer outside the hot air circulation ventilation path.

[Embodiments of the invention]

Figure 2 is a cross-sectional view showing one embodiment of the present invention. 0 is an outer casing, with a door (2) for opening and closing the opening for putting in and taking out the dried material at the front, and a door (2) for sucking indoor air. Just in case the intake port (b)
A discharge port for discharging indoor air is provided at the bottom. (to) is a rotating drum that is rotatably installed inside the outer casing and has a drying chamber (86&) inside.The back has a warm air inlet (2), and the front has a hot air inlet and outlet for drying materials. Each is provided with an outlet (2) through which the wind flows out.

(2) is a hot air circulation ventilation duct with one end connected to the inlet (b) and the other end connected to the outlet side wall opening; The warm air circulation fan θ is an electric motor that rotates the warm air circulation fan, and its shaft (6) is provided with a pulley (2) for rotating the above-mentioned rotating drum (2) via a bell (6). ing. The trowel is a compressor, the trowel is a plate-fin type condenser, and the θ is a capillary)
is a plate-fin type evaporator, and these compressions i(c),
A refrigeration cycle is formed by the condenser θQ, the capillary θη, and the evaporator. A part of the container (c) is provided outside the hot air circulation ventilation path (2), and the inside of the hot air circulation ventilation path (2) is connected to the drain recovery section (48B).
The hot air circulation ventilation duct is formed so that the outside acts as a heat absorption part (48b), and a drain outlet (not shown) is provided at the bottom of the hot air circulation ventilation duct (toward) of the drain recovery part (48B). It is being θ・ is a blower that blows outside air to the heat sink (48b), which sucks outside air from the intake port (goods) and sends it to the discharge port (goods).
2). Note that the arrow in the figure indicates the direction of air blowing.

In the dryer configured as described above, when the material to be dried is compressed into the rotating drum and a time switch (not shown) is set, the electric motor 0◇, the compressor) and the blower are operated. The condenser (1) is heated by the refrigeration cycle, and hot air is supplied into the drying chamber (86a) by the hot air circulation fan. Moisture is removed from the material to be dried by this warm air and the rotation of the rotating drum. The temperature of the warm air is slightly lowered and it becomes humid warm air, and then it reaches the drain recovery section (48a) of the evaporator from the hot air circulation ventilation path (toward), where it is cooled by the refrigeration cycle. ) is condensed on the surface of the drying material, the water removed from the material to be dried is removed, and the dried low-temperature air is heated again in the condenser () and supplied to the drying chamber (86B). On the other hand, outside air is supplied to the heat absorption section (48b) of the evaporator by the blower S-, and heat is supplied to the refrigeration cycle.

Such a cycle is repeated, the material to be dried gradually dries, and after a predetermined period of time, the time switch is turned off and the operation ends.

〔Effect of the invention〕

As described above, the present invention includes a drying room, a hot air circulation air passage provided through the drying room, a warm air circulation fan provided on the hot air circulation air passage, and a hot air circulation fan provided in the hot air circulation air passage. An evaporator and a condenser of a refrigeration cycle are provided in a ventilation passage, and the evaporator is provided upstream of the condenser, and a part of the evaporator is disposed outside the hot air circulation ventilation passage. As a result, the evaporator can be kept at a low temperature, and the water taken by the material to be dried can be reliably condensed and drained as a drain, so that dry warm air can be constantly supplied and the drying time can be shortened. In addition, since heating and dehumidification are performed using a refrigeration cycle, there is an effect that the heat utilization efficiency is high.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a conventional example, and FIG. 2 is a sectional view showing an embodiment of the present invention. In the figure, (868) is a drying room, (to) is a hot air circulation ventilation path,
The ring is a hot air circulation fan, ni) is a condenser, steam is an evaporator, C
48&) is a drain recovery section, and (48b) is a heat absorption section. Agent Masuo Oiwa

Claims (1)

[Claims] A drying room, a warm air circulation air passage provided through the drying room, a warm air circulation fan provided on the hot air circulation air passage, and a refrigeration cycle provided on the hot air circulation air passage. A dryer comprising an evaporator and a condenser, the evaporator being provided upstream of the condenser, and a part of the evaporator being disposed outside the hot air circulation path.